Hibiki Amami would be a regular high school girl if it weren't for one thing: a sixth sense that allows her to see ghosts. Rather than being scared, Amami is more interested in befriending and helping the apparitions. This often leads to her human friends witnessing paranormal activity as the ghosts try to help Amami with everyday tasks. The majority of Amami's friends accept that she has a sixth sense, but Narumi Inoue—a girl who is terrified of the supernatural—refuses to acknowledge that ghosts are real. Though she is scared and stubborn, Inoue goes along with the rest of her friends, who decide to take up Amami's mission of helping ghosts however they can.

Having gone from pampered to poor after the bankruptcy of her father's company, Youko Nishikawa struggles to drop her princess-like persona and make friends at her all-girls high school. One day, while eating alone in a nearby forest, she has a chance encounter with Futaba Odagiri, the super-energetic transfer student, and Teru Hayama, an innocent-looking girl with a surprisingly direct and sometimes mean personality. Despite their differing personalities, the three girls who all have the kanji for leaf in their name begin an unlikely friendship as they try to navigate through an amusing and spontaneous adventure known as high school life. Sansha Sanyou is a cheerful, cute series revolving around three close but very different friends as they try to balance the everyday challenges that school and adolescence have to offer.

After Germania invaded a neighboring country in 1939, Europe spiraled into a devastating war. During the war, Germania set its sights on the weak alpine country of Elystadt. Boasting a far superior military and having achieved profuse success earlier in the war, it was expected that Germania would conquer Elystadt with ease. Matters are only made worse for the small country when Germanian soldiers capture their princess, Ortfiné Finé Fredericka von Eylstadt, as she is heading to a crucial meeting with Britannia. Yet, when a concurrent Germanian transport mission goes awry, Izetta, the last witch alive, escapes. When she recognizes Princess Finé from her childhood, Izetta rescues her from the Germanian soldiers by making use of her magical abilities. Now reunited with the princess, Izetta pledges to protect Elystadt from Germania, and with the last surviving witch on their arsenal, Elystadt hopes to turn the tides against the imperialist war giant.

Command, control, and communication: the three pillars to successfully execute missions in modern military combat. They are also the source of inspiration behind Stella Women's Academy airsoft club, aptly named the C3 Club. Due to the club's nature, the members have trouble finding newcomers, but, as the school year starts, they hope to find their next sharpshooter among a new crop of students. Yura Yamato is a freshman at Stella; she sports an unassertive personality that makes it difficult to make friends. She soon discovers her absent roommate owns a massive collection of military memorabilia and movies, including a replica Desert Eagle. When one of the C3 Club's members catches Yura re-enacting an action movie, she drags her into the Club's airsoft practice match. Despite being on the losing side, Yura is unexpectedly drawn to the excitement of the game. Upon her return, Yura's roommate—Sonora Kashima—reveals herself to be the C3 Club's president and invites her to join. Now with Sonora by her side, one more exhilarating match convinces Yura to sign up. Thanks to her new teammates, Yura discovers a hidden side to herself and an unexpected love for airsoft. However, as her dedication to the game slowly takes over her life, Yura finds herself on the path of great change and success—one that may easily lead to self-destruction.